Condensed Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating revenues:
Passenger	$ 180,078	$ 153,280
Non-ticket	121,417	79,382
Total operating revenue	301,495	232,662
Operating expenses:
Aircraft fuel	108,725	80,912
Salaries, wages and benefits	52,654	43,193
Aircraft rent	32,873	27,708
Landing fees and other rents	15,114	11,655
Distribution	14,201	11,932
Maintenance, materials and repairs	10,414	8,058
Depreciation and amortization	2,870	1,546
Other operating	27,023	20,733
Loss on disposal of assets	449
Special charges	(72)	81
Total operating expenses	264,251	205,818
Operating income	37,244	26,844
Other expense (income):
Interest expense	540	14,286
Capitalized interest	(540)	(1,037)
Interest income	(415)	(86)
Other expense	43	48
Total other expense (income)	(372)	13,211
Income before income taxes	37,616	13,633
Provision for income taxes	14,197	5,750
Net income	$ 23,419	$ 7,883
Net income per share, basic	$ 0.32	$ 0.30
Net income per share, diluted	$ 0.32	$ 0.30